Scraping-machine.



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SGRAPING MACHINE. I APPLIOTION FILED OUT, 2, 1 903.

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witnesses scraper-blade.

Patented June 7, 1904.

PATENT GEErcE..

DANIEL CHARLES MAYTAG, OF LAUREL, IOWA.

SCRAPING- MACHINE.

SPECIFICATION forrning part of Letters Patent No. 761,896, dated J' une 7, 1904.

Application iled October 2, 1903.

T0 a/ZZ whom, it may concern:

Be it known that I, DANIEL CHARLES MAY- TAG,"a citizen of the United States, residing at Laurel, in the county of Marshall and State of Iowa, have invented certain new and useful Improvements in Scraping-Machines, of which the following is a specification.

The objects of my invention are to provideY a road-scraper of simple, durable, and inexpensive construction especially designed for use in the nature of an attachment that may be quickly and easily applied to dumpingwagons,so that a single frame may be used either for a dumping-wagon or for use in connection with my improved scraping attachment.

My invention consists in certain details in the construction, arrangement, and combination of the various parts of the device whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in whichl Eigure 1 shows a top or plan view of the complete scraping attachment appliedto a wagon-frame as in practical use. Fig. 2 shows a side elevation of same. Fig. 8 shows an enlarged detail perspective View of the shaft for moving the scraper-blade, the sprocketwheel connected with the shaft, the arm for supporting the center of the scraper-blade,

and the bracket in which said shaft is mounted. Fig. 4 shows an enlarged detail perspective view of one of the bearings for receiving the arms that support the scraper-blade. Fig. 5 shows an enlarged detail side view of one of the bracket members for supporting the Fig. 6 shows a transverse sectional view through one of the brackets for supporting the scraper-blade. Fig. 7 shows a "detail edge view of one of the guides for limiting the movement of thearms for supporting the lower end of the scraper-blade. Fig. 8 shows a detail perspective v iew of one of the extensible braces for supporting the lower end of the scraper-blade. Fig. 9 shows a sectional view through the central portion of the scraper-blade, showing the arm upon which the scraper-blade is pivoted. Fig. 10 shows a perspective View of one of the devices for which the rear wheels are mounted.

Serial No. 175,438. (No model.)

connecting the upper edge of the scraper-blade with its supporting brackets, and Fig. 11

vshows adetail sectional view on the indicated rline l 1 of Eig. 2.

Referring to the accompanying drawings, the machine-frame illustrated is one that is especially designed for use in connection with a dumping-wagon, and my attachment is applied thereto in such a manner as not to interfere or obstruct the space in which the body portion of the dumping-wagon would rest.

However, said frame forms no part of my present invention.

rlhe reference-numeral 10 indicates the rear l wheels.

of the side'piece 11y and projecting downwardly'and provided with a number of openings19 to receive a pin 20.` Near the front of the frame 11 is another bracket 21 of simi-` lar construction, except that the openings 19 are not provided. The numeralv 22 indicates a beam with its ends inserted in the said slotted brackets, the rear end of the beam 22 being adjustably iixed in the bracket 18 by the pin 20. rIhe front end of the beam is made vertically adjustable by means of a screw-v threaded shaft 23, pivoted to the front of the beam 22 andseat'ed in a bracket 24, fixed tov the machine-frame. At its top is a handwheel 25, by which the shaft may be rotated.

Obviously by this means the beam 22 may be vertically adjusted and firmly secured in various positions. It is to be understood in this connection that a similar beam and brackets and adjusting devices are provided for each side of the machine-frame. On eachof the beams 22 is a bracket for supporting one end lOO of the scraper-blade. Each of these brackets comprises two mating plates 26 and 27 having longitudinal grooves to receive the beam 22. These plates are bolted together at their lower ends by the bolts 28, and their upper ends are adjustably held together by means of a bolt 29, passed through the plates and provided with a crank-nut 30. Obviously by manipulating the crank-nut 30 the plates may be brought together and the bracket firmly clamped to the beam 22, and when the cranknut is loosened the bracket may be moved longitudinally on the beam 22. In the forward lower end of each of the plates 26 and 27 is a recess 31, and at the rear end of each of the plates 26 and 27 is a recess 32. rIhe recess ends of these plates form a socket at each end for purposes hereinafter made clear.

The reference-numeral 33 indicates an arm having a' ball 34 at its top designed to enter the socket formed by the recesses 31. A block 35 is attached to the arm 33 and provided with a T-shaped groove 36.

The reference-numeral 37 indicates a-n arm having a ball 38 on its end, said ball designed to enter the socket formed by the recesses 32. On the arm 37 is a notched surface 39, and near its opposite end is a longitudinal slot 40. 'Ihis arm 37 enters an arm 41, which is also provided with a ball 42. On one side of the arm 41 is a longitudinal slot 43, and a bolt 44 is passed through the slots 4() and 43 to adjustably hold the arms 37 and 41 together, the roughened surface 39 and the arm 37 aiding in preventing the said arms from slipping.

rIhe reference-numeral 45 indicates a block having a socket 46 at its rear end and a T- shaped groove in its forward end.

The parts just described are assembled as follows: On each of the beams 22 a bracket composed of the two plates 26 27 is mounted. In the socket formed by the recesses 31 I place the ball 34, with its arm and block, and in the socket formed by the recesses 32 I place the ball 38, havingthe arms 37 and 41 connected therewith, and the ball 42 enters the socket 46 of the block 45. The length of the arms 37 and 41 is such that the blocks 35 and 45 may stand in substantially vertical alinement directly under the plates 26, with their grooves toward the front, as clearly shown in Fig. 2.

I have provided means for preventing lateral movements of the arm 41, as follows: The reference-numeral 47 indicates a metal strip doubled upon itself at its central portion and having its upper end shaped to admit the plates 26 and 27 between them, and bolts 48 are passed through the sides of the strip 47 above and below the plates 26 and 27. The lower portion of the guide has its sides separated wide enough to admit the arm 41 and firmly support said arm 41 in position.

The scraper is composed of an angle-bar 49, having a scraper-blade 50 of ordinary construction secured thereto. On the rear face of the seraper-bhulc I have secured two longitudinal braces 51 and 52, preferably having T-shaped heads designed to enter the notches in the blocks 35 and and to slide longitudinally therein. Formed in the brace 5l is a number of openings 51, and a pin 51" is passed through one of these openings and serves to lock the block 45 against movement longitudinally of said brace. Said angle-bar 49 is provided with a series of openings 53, and an arm 54 is adjustably connected with said angle-bar 49 by means of a pin 55, passed through the arm 54 and through one of the openings 53. The forward end of this arm 54 is pivoted on a bracket 56, which bracket is secured to the under surface of the crosspieee 16. By this means the scraper-blade is pivotally supported at its central portion, and when it is desired to project either end ol' the scraper-blade the blademay be adjusted longitudinally by removing the pin 55, then sliding the blade in its supports in the blocks 35 and 45, and replacing the pin in another one of the openings 53. This arm isdesigned only to brace the scraper-blzule against rearward movement.

I have provided for reversing` the incline of the scraper-blade relative to the machineframe, as follows: l `he numeral 57 indicates a vertical shaft mounted in the cross-piece 16 and in the bracket 56 and having a handwheel 58 at its top. On its lower end is a. sprocket-wheel 59, and a sliroclut-chain 60 is passed around the sprocket-wluel 5S), and its ends are attached to the brackets composed of the plates 26 and 27, so that if the brzuzkets are free to slide on the beams 22 then the operator by manipulating the haml-wheel 58 may adjust the incline of the seraper-blzule as desired.

In practical use it is obvious that either end of the scraper-blzule may he adjusted vertically throughout a comparatively small limit of its movement by a manipulation of the hand-wheels 25. If a greater :uljustment is desired, the rear end of the beam 22 is bodily moved and fixed in position by the pin 2l). In use the adjustment of the rear end of the beam is ordinarily only necessary when transportingthe machine, as the :uljustn'ient of the frontend of the beam 22 covers a range sulicient for the necessary variation when the machine is in actual use. In some instances it may be desired to project one end of the blade farther from the machine than the other. When this is desired, the pin is renuned and the blade is free to slide laterally in its supporting -blocks, and then the pin is connected with the blade at a new point. In some instances it is desirable to tilt the lower edge of the blade either forwardly or rearwardly. This may be done by adjusting the length of the arms 37 and 41 by means of the bolt 44.

IOO

The whole scraper attachment may be readily, quickly, and easily removed from the machine-frame by removing the plates 26 and 27 from the beams 22, so that the same machine-frame may be used in connection with a dumping-wagon.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States therefore, is--- 1. In a machine of the class described, the combination of two longitudinal beams, means for vertically adjusting said beams, abracket slidingl y mounted on each beam,and a scraperblade supported near its ends by said brackets, for the purposes stated.

2. The combination with a machine-frame, of two longitudinal beams at the opposite sides of the machine-frame, means for vertically adjusting these beams, a bracket slidingly supported on each beam, ascraper-blade having its ends attached to the said brackets and supported thereby, a stationary arm pivotally connected with the central portion ofthe scraper-blade, a chain attached to the end portions of the scraper-blade, a sprocket-wlieel at the front of the frame engaging said sprocketchain, and means for turning the sprocketwheel to adjust the angle of the scraper-blade. A '8. In a machine of the class described, the combination of a longitudinal beam, a bracket on said beam, composed of two sides having sockets at their end portions, means for clamp- -ing the sides together to secure them in position on the beam, a-scraper-blade, a track or guide near the upper end of the scraper-blade, a track or guide near the lower end of the scraper-blade, a sliding block on each track or guide, an arm on the upper block, having a ball at its end placed in the forward socket of the bracket, and an arm or brace having a ball at each end, one of which is inserted in the lower block and the other in the socket at the rear of the bracket.

4. In a machine of the class described, the

ing the sides together to secure them in position on the beam, a scraper-blade, a track or guide near the upper end of the scraper-blade, a track or guide near the lower end of the scraper-blade, a sliding block on each track or guide, an extensible arm on the lower block on each track or guide, an extensible arm on the upper block, having a ball at its end placed in the forward socket of the bracket, and an arm or brace having a ball at each end, one of which is inserted in the lower block and the other in the socket at the rear of the bracket.

5. In a machine of the class described, the combination of a longitudinal beam, a bracket on said beam, composed of two sides having sockets at their end portions, means for clamping the sides together to secure them in position on the beam, a scraper-blade, a track or guide near the upper end of the scraper-blade, a track or guide near the lower end of the scraper-blade, a sliding block on each track or guide, an arm on the upper block, having a ball at its end placed in the forward socket of the bracket, and an arm or brace having a ball at each end, one of which is inserted in the lower block and the other in the socket at the rear of the bracket, and a guide iixed to the bracket and engaging the arm or brace to prevent lateralmovements thereon.

6. In a device of the class described, the combination of a machine-frame, a rigid arm near the center of the machine-frame, a scraperblade having its ends slidingly supported, a plate at the central portion of the scraperblade having a series of openings therein, a pin passed through the rigid arm and designed to enter any of the openings in the said plate, a sprocket-chain attached to the ends of the scraper-blade, a sprocket-wheel engaging the central portion of the chain, means for turn- -ing said sprocket-wheel, arranged and combined, substantially in the manner set forth and for the purposes stated.

DANIEL CHARLES MAYTAG. Vitnesses:

` A. L. Mosnn,

L. R. MAYTAG. 

